Patent US3153818A successfully refreshed from Google Patents.
US3153818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window sash construction
Assignee: Individual
•
Filing: 1961-03-06
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Granted: 1964-10-27
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred C Osten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:00
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5054; E06B3/5063; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A SPRING-BALANCED REMOVABLE SLIDING SASH WINDOW INSTALLATION WHEREIN A RECTANGULAR WINDOW FRAME IS PROVIDED ON OPPOSITE SIDES WITH ELONGATED SASH GUIDES AT LEAST ONE OF WHICH IS YIELDABLY MOUNTED THEREON AND BOTH OF WHICH CONTAIN SELF-LOCKING SPRING SASH BALANCES CARRYING INWARDLY-PROJECTING NORMALLY COAXIAL LOCK-ACTUATING SASH PIVOTS, THE COMBINATION WITH SAID PIVOTS OF A QUICKLYREMOVABLE PIVOTING WINDOW SASH CONSTRUCTION, COMPRISING A SASH FRAME INCLUDING SIDE, TOP AND BOTTOM RAILS DISPOSED IN AN OPEN-CENTERED SUBSTANTIALLY RECTANGULAR ARRANGEMENT AND SECURED TO ONE ANOTHER AT THERIR ADJACENT ENDS, A WINDOW PANE UNIT MOUNTED IN THE OPEN CENTER OF SAID ARRANGEMENT WITH ITS EDGES ENGAGING SAID RAILS,
Claim 2
Dependent Claim
103 words
IN A SPRING-BALANCED REMOVABLE SLIDING SASH WINDOW INSTALLATION WHEREIN A RECTANGULAR WINDOW FRAME IS PROVIDED ON OPPOSITE SIDES WITH ELONGATED SASH GUIDES AT LEAST ONE OF WHICH IS YIELDABLY MOUNTED THEREON AND BOTH OF WHICH CONTAIN SELF-LOCKING SPRING SASH BALANCES CARRYING INWARDLY-PROJECTING NORMALLY COAXIAL LOCK-ACTUATING SASH PIVOTS, THE COMBINATION WITH SAID PIVOTS OF A QUICKLYREMOVABLE PIVOTING WINDOW SASH CONSTRUCTION, COMPRISING A SASH FRAME INCLUDING SIDE, TOP AND BOTTOM RAILS DISPOSED IN AN OPEN-CENTERED SUBSTANTIALLY RECTANGULAR ARRANGEMENT AND SECURED TO ONE ANOTHER AT THERIR ADJACENT ENDS, A WINDOW PANE UNIT MOUNTED IN THE OPEN CENTER OF SAID ARRANGEMENT WITH ITS EDGES ENGAGING SAID RAILS,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |